The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 5, 2026

Lycoming O-233

6 aircraft on the U.S. register carry a Lycoming O-233 engine, rated at about 115 horsepower. The American Legend Aircraft Co AL18 is the model most often fitted with it (5 aircraft). The aircraft carrying it were built between 2013 and 2014.

The FAA records engines by code, usually at the level of a series ("O-320 series") rather than the exact variant; this page gathers every FAA code that reads as Lycoming O-233. FAA spelling: O-233.

Fitted to model families

American Legend Aircraft Co AL185Sayre Matthew FC71

American Legend Aircraft Co AL18 · Sayre Matthew FC7

Where they are owner's state

Texas2Michigan1Kansas1Georgia1Florida1

Kind of aircraft

Piston singles6 (100%)

When the aircraft were built by decade

0234662010

What the FAA has certified, ordered and been told about the Lycoming O-233 the component layer

The design is held under 1 type certificate (E-223, held by Lycoming Engines). The FAA has issued 6 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 1 failure report with the FAA since 1995, 1 of them in the last ten years.

FAA orders 6 airworthiness directives · newest first

2026-04-082026-04-11 · Engine (Reciprocating) · engine
2024-12-052024-21-02 · Engine (Reciprocating) · engine
2012-03-272012-03-07 · Carburetor · engine
2004-06-252004-10-14 · Crankshaft gear · engine
1991-05-2890-04-06 R1 · Propeller Governor External Oil Line · engine
1969-01-1666-06-03 · Connecting Rod Assemblies · engine

Failure reports 1 since · what operators and shops told the FAA

00011121

Parts most often reported as the reports name them

Connecting Rod1

Latest reports

2021-08-20Connecting Rod: broken

Certificates and bulletins

E-223Type certificate held by Lycoming Engines · 43 models listed · revised January 31, 2020

Safety bulletins 3 · advice, not orders

2019-05-02NE-19-08 · Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders
2014-03-24NE-14-13 · Reciprocating Engine - Cylinder Mounting Studs
2008-09-10NE-06-32R1 · Reciprocating Engine - Crankshaft

Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.

Connections how this engine series links to the rest of the register

Fitted to
Where they are
Biggest operators
Airworthiness

These connections as data: /graph/engine/lycoming-o-233.json · about the eFlight graph.

Aircraft newest certificates first · 6

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N14C American Legend Aircraft Co
AL18
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Light sport 2026-05-27 ValidFAA registration status code V: Valid registration. All codes
N1919G American Legend Aircraft Co
AL18
Fixed-wing, single engine Low and Slow Aviation LLC
Williston, Florida
Light sport 2024-04-15 ValidFAA registration status code V: Valid registration. All codes
N859JL American Legend Aircraft Co
AL18
Fixed-wing, single engine Individual owner
Texas
Light sport 2021-04-05 ValidFAA registration status code V: Valid registration. All codes
N311SL American Legend Aircraft Co
AL18
Fixed-wing, single engine Individual owner
Texas
Light sport 2020-11-16 ValidFAA registration status code V: Valid registration. All codes
N128LC American Legend Aircraft Co
AL18
Fixed-wing, single engine Individual owner
Georgia
Standard 2017-06-28 ValidFAA registration status code V: Valid registration. All codes
N875W Sayre Matthew
FC7
Fixed-wing, single engine Individual owner
Michigan
Experimental 2013-09-24 ValidFAA registration status code V: Valid registration. All codes

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.